AI Summary

A new study published in *Science Advances* used climate simulations to examine the impact of limiting global warming to 1.5 °C above pre‑industrial levels. The researchers found that, under such mitigation scenarios, the Southern Ocean surrounding Antarctica could shift from its current role as a major carbon sink to becoming a significant carbon source. The analysis highlights that efforts to reduce atmospheric CO₂—through net‑zero emissions and active removal—may produce unexpected feedbacks in this key oceanic region.

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